Unverified Commit 62b98258 authored by Peter Chen's avatar Peter Chen
Browse files

usb: chipidea: add query_available_role interface 



The glue layer may need to know current available role to do some
setting, eg, the wakeup setting. So we add ci_hdrc_query_available_role
for that.

Signed-off-by: default avatarPeter Chen <peter.chen@nxp.com>
parent c71d13f9

drivers/usb/chipidea/core.c

+27 −0
Original line number Diff line number Diff line
@@ -877,6 +877,33 @@ void ci_hdrc_remove_device(struct platform_device *pdev) 
}

EXPORT_SYMBOL_GPL(ci_hdrc_remove_device);



/**

 * ci_hdrc_query_available_role: get runtime available operation mode

 *

 * The glue layer can get current operation mode (host/peripheral/otg)

 * This function should be called after ci core device has created.

 *

 * @pdev: the platform device of ci core.

 *

 * Return runtime usb_dr_mode.

 */

enum usb_dr_mode ci_hdrc_query_available_role(struct platform_device *pdev)

{

	struct ci_hdrc *ci = platform_get_drvdata(pdev);



	if (!ci)

		return USB_DR_MODE_UNKNOWN;

	if (ci->roles[CI_ROLE_HOST] && ci->roles[CI_ROLE_GADGET])

		return USB_DR_MODE_OTG;

	else if (ci->roles[CI_ROLE_HOST])

		return USB_DR_MODE_HOST;

	else if (ci->roles[CI_ROLE_GADGET])

		return USB_DR_MODE_PERIPHERAL;

	else

		return USB_DR_MODE_UNKNOWN;

}

EXPORT_SYMBOL_GPL(ci_hdrc_query_available_role);



static inline void ci_role_destroy(struct ci_hdrc *ci)

{

	ci_hdrc_gadget_destroy(ci);

include/linux/usb/chipidea.h

+2 −0
Original line number Diff line number Diff line
@@ -99,5 +99,7 @@ struct platform_device *ci_hdrc_add_device(struct device *dev, 
			struct ci_hdrc_platform_data *platdata);

/* Remove ci hdrc device */

void ci_hdrc_remove_device(struct platform_device *pdev);

/* Get current available role */

enum usb_dr_mode ci_hdrc_query_available_role(struct platform_device *pdev);



#endif